<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.c1 {
				background-color: #00ffff;
			}

			.c2 {
				border: solid 1px black;
			}
			
			#d1{
				background-color: blueviolet;
			}
			
			div h1{
				
			}
		</style>

	</head>
	<body>
		<div class="c1">
			
			我是div
			<h1>内部标题</h1>	
		</div>


		<div>我是div</div>
		<div id="d1">我是div 特殊的</div>
		<div>我是div</div>
		<div>我是div</div>

		<p class="c1 c2">我是p标签</p>


	</body>
</html>
